''Ancotrema'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...

terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on o ...

pulmonate Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group inclu ...

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the family

Haplotrematidae Haplotrematidae is a Taxonomy (biology), taxonomic family (biology), family of predatory air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the superfamily Haplotrematoidea.MolluscaBase eds. (2021). Mollu ...

. This genus is sometimes considered to be a subgenus of ''

Haplotrema ''Haplotrema'' is a genus of carnivorous land snails in the family Haplotrematidae. They are widely distributed in North America. Species Species include:Myers, P., et al''Haplotrema''.The Animal Diversity Web. 2013. * '' Haplotrema alameda'' ...

''. ''Haplotrema'' and ''Ancotrema'' cannot be distinguished only on the basis of their shells, but can be distinguished on the basis of their detailed internal anatomy. The genus ''Ancotrema'' contains the following species:
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). * '' Ancotrema hybridum'' (Ancey, 1888); Oregon lancetooth * '' Ancotrema sportella'' (Gould, 1846); beaded lancetooth * '' Ancotrema voyanum'' (Newcomb, 1865); hooded lancetooth * '' Ancotrema zopherum'' Roth, 1990: dusky lancetooth

References

{{Taxonbar, from=Q3073030 Haplotrematidae